Also, since it seems like nobody's taken the Sneaky Pete road, and adopted that sound, most steelers are shooting for pretty much the same tone.
From the videos and recordings I've heard of shows, that is very true. And based on recent forum discussions, the makers are generally all shooting for the same tone as well. There are a few of us mavericks out there who either play Fenders or twist our modern guitars to play Sneaky-like; but I think two issues exist with that - either the players are too new to really be able to play well enough for that kind of venue (I'd fall in that group, having only limited steel experience) or just aren't all that interested, and won't be until the atmosphere changes somewhat.
The point Joe and Tony make is really well taken - Having done guitar clinics with "house" bands, I would have to adjust what I was going to do based on what THEY could handle. For example, a backup group of rockers would have a hard time with me doing a country stringbender demo, since "country" to them was The Allman Brothers...and country guys would implode trying to back a demo of Leslie sounds on "Cold Shot".
So I agree - a blues or rock "show" isn't really the idea - a "day" is, with guys bringing their own bands, or at least choosing backup guys from a list of people with the right resume.
I like the "roots" terminology, and that's where it's really at - and evidenced by Joe Wright's Australian show I saw, where the backup band was game for anything, having a great time...but obviously had NO "roots" in rock or blues.
Every description of the crowd and backup "house" bands at shows makes me less inclined to attend one - OTOH, tell me Joe Goldmark will be playing with his own backup instead of Russ Wever on bass and the other usual guys, and I'm looking for deals on plane tickets....
And I don't think I'm in a small group, either. There are a lot of players both on and off the forum who ignore shows due to the preponderance of 1) the same old guys being propped up behind their guitars year after year, 2) too much blue hair in the crowd, and 3) either hands over the ears or people heading for the exits during any rock songs.
It's much like the bluegrass festivals of the 70's - it all falls back on the small group of folks who RUN the shows. In those days, if you didn't wear all the same shirts or played a bluegrass version of a rock song, you were a pariah. Having been booked for a 45-minute block once on the basis of a demo tape, my old band was immediately accosted for our lack of matching attire and long hair, but begrudgingly let on stage...for *three* songs, with "19th Nervous Breakdown" causing the announcer to make a sudden appearance thanking us for our fine set as we got the "hook".
The guys who run the shows nowdays, especially St. Louis, I would guess don't know squat about rock or blues and would need to bring in someone who does to plan that part of the show. And the likelihood of that happening right now is probably one notch above zero.
So until that changes, I think you'll likely have the same thing - country players backed by country house bands throwing in a lightweight rock tune now and then as a novelty to show that they're "cool". And it works among the crowd that attends (at least the ones not offended by it), but those with a strong rock background who watch performances like that see right through the facade, and to them it just doesn't work.